| 摘要 |
A mechanism for changing a position of a support surface (3) for seats and couches and a length of which changes in a longitudinal direction, includes two horizontally spaced, telescopic rods (1) having each a bent region and displaceable in two telescopic sleeves (2), and two slide connection elements carrying a deformable region (22) of the support surface (3) and surrounding respective telescopic rods (1).
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